منابع مشابه
Development of a doubly weighted Gerchberg-Saxton algorithm for use in multibeam imaging applications.
We report on the development of a doubly weighted Gerchberg-Saxton algorithm (DWGS) to enable generation of uniform beamlet arrays with a spatial light modulator (SLM) for use in multiphoton multifocal imaging applications. The algorithm incorporates the WGS algorithm as well as feedback of fluorescence signals from the sample measured with a single-photon avalanche diode (SPAD) detector array....
متن کاملHybrid phase retrieval using moment-based wavefront sensing and Gerchberg-Saxton iterative transform method
The iterative phase retrieval method has the intrinsic weakness in computational speed. However, its ability to capture fine spatial phase structure is clearly the benefit much needed in characterizing image quality of an instrument in an end-to-end fashion. The empirical wisdom of any iterative process is that the convergence becomes a lot faster when the initial guess is close to the phase so...
متن کاملWavefront Correction in a Shaped-Pupil Coronagraph Using a Gerchberg-Saxton-Based Estimation Scheme
The detection of extra-solar terrestrial planets requires the use of space-based high-contrast imaging. Stellar photon noise as well as light thrown about by system aberrations necessitate the use of a high quality light suppression system and a method for wavefront correction. We present here a wavefront estimation scheme to be used with estimate-based correction for the shaped pupil coronagra...
متن کاملExperimental demonstration of holographic three-dimensional light shaping using a Gerchberg–Saxton algorithm
We use a three-dimensional Gerchberg–Saxton algorithm (Shabtay (2003) Opt. Commun. 226 33) to calculate the Fourier-space representation of physically realizable light beams with arbitrarily shaped three-dimensional intensity distributions. From this representation we extract a phase-hologram pattern that allows us to create such light beams experimentally. We show several examples of experimen...
متن کاملMultiple-image encryption and multiplexing using a modified Gerchberg-Saxton algorithm and phase modulation in Fresnel-transform domain.
What we believe to be a new technique, based on a modified Gerchberg-Saxton algorithm (MGSA) and a phase modulation scheme in the Fresnel-transform domain, is proposed to reduce cross talks existing in multiple-image encryption and multiplexing. First, each plain image is encoded and multiplexed into a phase function by using the MGSA and a different wavelength/position parameter. Then all the ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2015
ISSN: 1094-4087
DOI: 10.1364/oe.23.028416